diff --git a/drivers/Pic.c b/drivers/Pic.c
index 8cf4da8..6e12a50 100644
--- a/drivers/Pic.c
+++ b/drivers/Pic.c
@@ -20,7 +20,23 @@ void PitInstall() {
     outb(0x40, (divisor >> 8) & 0xFF); // High byte
 }
 
-
+void PitSetFrequency(uint16_t hz) {
+    // Save current interrupt state
+    irq_flags_t flags = save_irq_flags();
+    cli();
+
+    PIT_FREQUENCY_HZ = hz;
+    // Safer divisor calculation
+    uint32_t div32 = 1193180u / (hz ? hz : 1u);
+    uint16_t divisor = (uint16_t)div32;
+
+    outb(0x43, 0x36);
+    outb(0x40, divisor & 0xFF);
+    outb(0x40, (divisor >> 8) & 0xFF);
+
+    // Restore previous interrupt state
+    restore_irq_flags(flags);
+}
 void PicInstall() {
     uint8_t a1, a2;
 
@@ -52,7 +68,4 @@ void PicInstall() {
     // Read current mask, clear bit 0, write back
     uint8_t pic1_mask = inb(PIC1_DATA);
     outb(PIC1_DATA, pic1_mask & ~0x01); // Clear bit 0 (IRQ0)
-
-    // Initialize PIT after PIC
-    PitInstall();
 }
diff --git a/drivers/Pic.h b/drivers/Pic.h
index 7d9531f..37e0ad6 100644
--- a/drivers/Pic.h
+++ b/drivers/Pic.h
@@ -1,7 +1,7 @@
 #ifndef PIC_H
 #define PIC_H
-
+#include "stdint.h"
 void PicInstall();
 void PitInstall();
-
+void PitSetFrequency(uint16_t hz);
 #endif
\ No newline at end of file
diff --git a/drivers/VesaBIOSExtension.c b/drivers/VesaBIOSExtension.c
index eff8223..2b4cfd5 100644
--- a/drivers/VesaBIOSExtension.c
+++ b/drivers/VesaBIOSExtension.c
@@ -342,7 +342,7 @@ void VBEDrawStringCentered(uint32_t center_x, uint32_t center_y, const char* str
 void VBEShowSplash(void) {
     if (!vbe_initialized) return;
 
-    for (unsigned int i = 0; i < num_splash_images * 6; i++) { // Loop
+    for (unsigned int i = 0; i < num_splash_images * 4; i++) { // Loop
         const uint32_t* image_data = (const uint32_t*)splash_images[i % num_splash_images];
 
         for (uint32_t y = 0; y < vbe_info.height; y++) {
diff --git a/kernel/core/Kernel.c b/kernel/core/Kernel.c
index 7fc8750..9fc2a7d 100644
--- a/kernel/core/Kernel.c
+++ b/kernel/core/Kernel.c
@@ -321,9 +321,10 @@ static InitResultT SystemInitS2(void) {
     PrintKernelSuccess("[SYSTEM] System calls initialized\n");
 
     // Initialize PIC
-    PrintKernel("[INFO] Initializing PIC...\n");
+    PrintKernel("[INFO] Initializing PIC & PIT...\n");
     PicInstall();
-    PrintKernelSuccess("[SYSTEM] PIC initialized\n");
+    PitInstall();
+    PrintKernelSuccess("[SYSTEM] PIC & PIT initialized\n");
 
     // Initialize keyboard
     PrintKernel("[INFO] Initializing keyboard...\n");
diff --git a/kernel/etc/Shell.c b/kernel/etc/Shell.c
index 869e088..5f13cbd 100644
--- a/kernel/etc/Shell.c
+++ b/kernel/etc/Shell.c
@@ -7,15 +7,15 @@
 #include "Memory.h"
 #include "PCI/PCI.h"
 #include "PS2.h"
+#include "Packet.h"
 #include "Panic.h"
 #include "Process.h"
+#include "RTL8139.h"
 #include "StringOps.h"
 #include "VFS.h"
 #include "VMem.h"
 #include "VesaBIOSExtension.h"
 #include "stdlib.h"
-#include "Packet.h"
-#include "RTL8139.h"
 
 static char command_buffer[256];
 static int cmd_pos = 0;
@@ -29,10 +29,7 @@ static void Version() {
 void info(void) {
     if (!VBEIsInitialized()) return;
     VBEShowInfo();
-    int count = 10000000;
-    while (--count) {
-        Yield();
-    }
+    Yield();
 }
 
 static char* GetArg(const char* cmd, int arg_num) {
diff --git a/kernel/memory/MemOps.c b/kernel/memory/MemOps.c
index 5fdf279..6d0d6c4 100644
--- a/kernel/memory/MemOps.c
+++ b/kernel/memory/MemOps.c
@@ -38,6 +38,10 @@ void itoa(uint64_t n, char* buffer) {
     strcpy(buffer, p);
 }
 
+void* memset(void* dest, int value, unsigned long size) { // FCK GCC
+    return FastMemset(dest, value, size);
+}
+
 void* FastMemset(void* dest, int value, uint64_t size) {
     ASSERT(dest != NULL);
     CpuFeatures* features = GetCpuFeatures();
diff --git a/kernel/memory/MemOps.h b/kernel/memory/MemOps.h
index 083e389..1395556 100644
--- a/kernel/memory/MemOps.h
+++ b/kernel/memory/MemOps.h
@@ -7,6 +7,7 @@ void* FastMemset(void* dest, int value, uint64_t size);
 void* FastMemcpy(void* dest, const void* src, uint64_t size);
 int FastMemcmp(const void* ptr1, const void* ptr2, uint64_t size);
 void FastZeroPage(void* page);
+void* memset(void* dest, int value, unsigned long size);
 
 void strcpy(char* dest, const char* src);
 void strcat(char* dest, const char* src);
diff --git a/kernel/process/Process.c b/kernel/process/Process.c
index 1efdf63..7672742 100644
--- a/kernel/process/Process.c
+++ b/kernel/process/Process.c
@@ -5,8 +5,8 @@
 #include "Io.h"
 #include "Ipc.h"
 #include "MemOps.h"
-#include "Memory.h"
 #include "Panic.h"
+#include "Pic.h"
 #include "Shell.h"
 #include "Spinlock.h"
 #include "VMem.h"
@@ -65,10 +65,6 @@ static uint64_t scheduler_calls = 0;
 
 extern uint16_t PIT_FREQUENCY_HZ;
 
-static void UpdatePIT(const uint16_t hz) {
-    PIT_FREQUENCY_HZ = hz;
-}
-
 static int FastFFS(const uint64_t value) {
     return __builtin_ctzll(value);
 }
@@ -907,6 +903,7 @@ void RequestSchedule(void) {
 }
 
 void Yield() {
+    irq_flags_t flags = SpinLockIrqSave(&scheduler_lock);
     Process* current = GetCurrentProcess();
     if (current) {
         // A process that yields is ready to run again, just giving up its timeslice.
@@ -916,6 +913,7 @@ void Yield() {
     RequestSchedule();
     // This instruction halts the CPU until the next interrupt (e.g., the timer),
     // which will then trigger the scheduler.
+    SpinUnlockIrqRestore(&scheduler_lock, flags);
     __asm__ __volatile__("hlt");
 }
 
@@ -1225,7 +1223,7 @@ void SystemService(void) {
 
             // Hysteresis - only change if difference is significant
             if (ABSi(new_freq - controller.current_freq) > 10) {
-                UpdatePIT(new_freq);
+                PitSetFrequency(new_freq);
                 controller.current_freq = new_freq;
 
                 // Log the change for analysis
diff --git a/kernel/process/Process.h b/kernel/process/Process.h
index 71105e2..0236727 100644
--- a/kernel/process/Process.h
+++ b/kernel/process/Process.h
@@ -5,9 +5,8 @@
 #include "Ipc.h"
 #include "Cpu.h"
 
-
 // =============================================================================
-// MLFQ SCHEDULER TUNING PARAMETERS
+// MLFQ SCHEDULER PARAMETERS
 // =============================================================================
 
 // Core Queue Configuration
@@ -83,8 +82,8 @@
 #define FAIRNESS_BOOST_ACTUAL_INTERVAL (FAIRNESS_BOOST_INTERVAL * FAIRNESS_BOOST_MULTIPLIER)
 #define LOAD_BALANCE_ACTUAL_THRESHOLD (LOAD_BALANCE_THRESHOLD * LOAD_BALANCE_MULTIPLIER)
 
-#define PROC_PRIV_SYSTEM    0   // Highest privilege (kernel services)
-#define PROC_PRIV_USER      1   // User processes
+#define PROC_PRIV_SYSTEM     0   // Highest privilege (kernel services)
+#define PROC_PRIV_USER       1   // User processes
 #define PROC_PRIV_RESTRICTED 2  // Restricted processes
 
 #define PIT_BUFF 20
diff --git a/meson.build b/meson.build
index 97ab237..776e363 100644
--- a/meson.build
+++ b/meson.build
@@ -25,6 +25,7 @@ c_flags = [
     '-finline-functions',
     '-foptimize-sibling-calls',
     '-nostdinc',
+    '-nostdlib',
     '-fno-builtin',
     '-ffreestanding',
     '-fstack-protector-strong',